It can't even get its scientific models sorted out. It does not explain how or why the very first life-form arrived.
The genesis of life on Earth is a separate theory called abiogenesis.
Carbon-14 is also passed onto the animals that eat those plants.
After death the amount of carbon-14 in the organic specimen decreases very regularly as the molecules decay.
Though still heavily used, relative dating is now augmented by several modern dating techniques.
But while the difficulties of single life may be intractable, the challenge of determining the age of prehistoric artifacts and fossils is greatly aided by measuring certain radioactive isotopes.I mean, if you can't even get the basic facts sorted out on your propaganda website, then what hope is there for you to look credible?